Example #1
0
func (testWrapper *blockchainTestWrapper) populateBlockChainWithSampleData() (blocks []*protos.Block, hashes [][]byte, err error) {
	var allBlocks []*protos.Block
	var allHashes [][]byte

	// -----------------------------<Genesis block>-------------------------------
	// Add the first (genesis block)
	block1 := protos.NewBlock(nil, nil)
	allBlocks = append(allBlocks, block1)
	allHashes = append(allHashes, []byte("stateHash1"))
	testWrapper.addNewBlock(block1, []byte("stateHash1"))

	// -----------------------------</Genesis block>------------------------------

	// -----------------------------<Block 2>-------------------------------------
	// Deploy a chaincode
	transaction2a, err := protos.NewTransaction(protos.ChaincodeID{Path: "Contracts"}, testutil.GenerateUUID(testWrapper.t), "NewContract", []string{"name: MyContract1, code: var x; function setX(json) {x = json.x}}"})
	if err != nil {
		return nil, nil, err
	}
	// Now we add the transaction to the block 2 and add the block to the chain
	transactions2a := []*protos.Transaction{transaction2a}
	block2 := protos.NewBlock(transactions2a, nil)

	allBlocks = append(allBlocks, block2)
	allHashes = append(allHashes, []byte("stateHash2"))
	testWrapper.addNewBlock(block2, []byte("stateHash2"))
	// -----------------------------</Block 2>------------------------------------

	// -----------------------------<Block 3>-------------------------------------
	// Create a transaction'
	transaction3a, err := protos.NewTransaction(protos.ChaincodeID{Path: "MyContract"}, testutil.GenerateUUID(testWrapper.t), "setX", []string{"{x: \"hello\"}"})
	if err != nil {
		return nil, nil, err
	}
	// Create the third block and add it to the chain
	transactions3a := []*protos.Transaction{transaction3a}
	block3 := protos.NewBlock(transactions3a, nil)
	allBlocks = append(allBlocks, block3)
	allHashes = append(allHashes, []byte("stateHash3"))
	testWrapper.addNewBlock(block3, []byte("stateHash3"))

	// -----------------------------</Block 3>------------------------------------
	return allBlocks, allHashes, nil
}
func TestBlockChain_SingleBlock(t *testing.T) {
	testDBWrapper.CreateFreshDB(t)
	blockchainTestWrapper := newTestBlockchainWrapper(t)
	blockchain := blockchainTestWrapper.blockchain

	// Create the Chaincode specification
	chaincodeSpec := &protos.ChaincodeSpec{Type: protos.ChaincodeSpec_GOLANG,
		ChaincodeID: &protos.ChaincodeID{Path: "Contracts"},
		CtorMsg:     &protos.ChaincodeInput{Function: "Initialize", Args: []string{"param1"}}}
	chaincodeDeploymentSepc := &protos.ChaincodeDeploymentSpec{ChaincodeSpec: chaincodeSpec}
	uuid := testutil.GenerateUUID(t)
	newChaincodeTx, err := protos.NewChaincodeDeployTransaction(chaincodeDeploymentSepc, uuid)
	testutil.AssertNoError(t, err, "Failed to create new chaincode Deployment Transaction")
	t.Logf("New chaincode tx: %v", newChaincodeTx)

	block1 := protos.NewBlock([]*protos.Transaction{newChaincodeTx})
	blockNumber := blockchainTestWrapper.addNewBlock(block1, []byte("stateHash1"))
	t.Logf("New chain: %v", blockchain)
	testutil.AssertEquals(t, blockNumber, uint64(0))
	testutil.AssertEquals(t, blockchain.getSize(), uint64(1))
	testutil.AssertEquals(t, blockchainTestWrapper.fetchBlockchainSizeFromDB(), uint64(1))
}